闰年判断

import java.util.*;
public class 闰年判断 {


public static void main(String[] args) {
Scanner in=new Scanner(System.in);
while(in.hasNext()){
int y=in.nextInt();
if(y%4==0&y%100!=0||y%400==0)
System.out.println("yes");
else
System.out.println("no");


}
}


}